Means of mechanically interconnecting separate telephone systems



1 630,536 May 1927' R. MAURER MEANS OF MECHANICALLY INTERGONNECTING SEPARATE i'ELEPl'IONE SYSTEMS Filed May 1, 1926 m VE/YTOIF, imam)! L. Maura a 24; m vzaim Patented May 31, 1e27. i I 1,630,536 UNITED STATES PATENT OFFICE.

n'n'ssann L. MAURER, or mmanaroms, INDIANA, ASSIG'NOR or ONE-HALF T EDWARD A. MAUREEL MEANS OF MEGEANICALLY INTERCONNECTIN G SEPARATE -TELEPHONE SYSTEMS. Application filed May 1, 1926. Serial No. 105,920.

The occasion often arises in telephone which the company telephone 12 is placed work in that the telephone, subscriber has such that the mouthiece of the transmitter a privatetelephone system of his own, norof the telephone 12 ts over the hole 13. A mally independent of the incoming telephone felt pad 14 is engaged between the box wall line from the outside exchange, and where and the mouth-piece so as to prevent vibrathe outside line is made to be connected elections of the mouth-piece being transmitted trically with the private system, the private to the box wall or the reverse.

system must have the proper characteristics Immediately behind the hole 13, is-.a refor' such a hookup to meet the telephone ceiver 15 with its mouth to the hole 13,,the

0 companys requirements, and a certain receiver 15 being of the usual and well charge is made for such a connection. Also known construction commonly employed in there are other frequent cases where a single telephone WOIk. I incoming telephone line isvhad and to make The receiver 16 of the telephone12 is rethat available at" different points, the submoved from the hook 17 and placed mouth 15 scriber has so-called extensions made to the doWnward over the hole 18, a piece of felt desired points, such a system again requiring separating the receiver from the box shelf a rental charge in addition to the extension 11. A transmitter 19, ofthe usual and well being under the supervision of the telephone known construction as employed in telecompany. Furthermore, to maintain a phone work, such as on s'witch boards has 20 standard service the telephone company usuits mouth-piece immediately under the ally demands that no electrical connections hole18. he made with the telephone circuit unless The telephone receiver 16 being removed under its jurisdiction. from its hook 17, the hook 17 will move up- Such conditions existing, it is the primary wardly as indicated bythe dash lines in Fig.

' 25 purpose of my invention, to eliminate any 1, this being-the position when the telephone and all electrical connections between a pri- 12 is in electrical circuit with the incoming vate telephone s stem and the incoming outcompany line. To disconnect the telephone side system, an at the same time make the 12, the hook 17 is pushed downwardly, such outside or company telephone serve as a being the usual and well known operation 30 'means from which the service may be transof the telephone in common usage today. mitted toany number of points as desired As the telephone rece ver 16 is alw ys reby the subscriber. That is, by this invenmoved and positioned as above described-1n tion, the subscriber may have his usual telemy invention, I provide a lever 20 pivotally phone as supplied by the telephone commounted 'on a bracket 21 within the upright 35 pan but the extensions within the subsection of the box 10, so that the lever may scri rs own property are his and may be extend through a slot 22 in the box wall and.

used, changed, or extended at will, withpass over the top of the hook 17. The lever out in any way causin an electrical hook- 20 extends backwardly from the bracket 21 up with the company te ephone. y and has a Sillhg 23, here shown as carried 40 I accomplish this object by the means as by the brac et- 21, which spring normally illustrated in the accompanying drawing, in pushes therear end of the lever 20 upwardly which i v to cause the'outer end of the lever to press Fig. 1, is a front elevation'of the appathe book 17 down to the position as indiratus with a company telephone in position -cated in Figs. 1 and 2, the pos tion when 45 for use; I the telephone 12 is not 1n operatlon.

' Fig. 2, a side elevatiomwith the side wall, T0 release the book 17 to place the teleremoved to disclose the inner mechanism; phone 12 in service, an electro-magnet 24 1s Fig.3, a front elevation similar to Fig. mounted with its pole-piece. under the rear 1, but with the telephone removed; and end of the lever 20, whereby, when the mag- Fig. 4, a top plan view, with the telephone net is energized, the lever end will be removed. pulled down to cause the lever to assume Like characters of reference indicate like the osition as indicated by the dash l1nes parts throughout the several views. inFi 2, and the hook 17 may then raise.

A'box-like structure 10.is formed vwith the Re erring to Fig. 2, the transmitter c 55 lower. forwardly projecting shelf 11 on and the retainer 15 are in electrical. circuit. 1

with the electro-magnet 24, so that when the circuit.isenergiaed by the subscribers system, a suggestive diagram of such a system being indicated below the box 10 in Fig. 2, the magnet 24 holds the lever 20 OK the hook 17.

Thus it may be seen that the telephone 12 belonging to the company has no electrical connection with the subscribers system,

and that the subscribers system interferes in no way with the usual operation of the company telephone. The sound waves arising in the company telephone receiver 16 actuate the transmitter 19, and similarly, the sound waves from the receiver 15 actuate the telephone transmitter.

I claim e I. The combination with a telephone having'an upright standard, a transmitter cafried on the standard, a telephone switchoperating, receiver arm extending from the standard normally tending to move upward, and a detachable receiver, of a table supporting said telephone, an extension from the table, a receiver carried by the extension adapted to be covered by the transmitter of said telephone, a transmitter carried by the table.against which the telephone receiver maybe placed, a lever pivotally carried by aperture therethrough, a telephone receiver communicating through said aperture, a lever extending from said table extension over said table, means normally causing said lever to travel downwardly, and an electromagnet to cause said lever to travel upwardly upon being suitably energized.

In testimony whereof I afiix my signature.

' RUSSELL L. MAURER. 

